OPTIMIZING ECHO ACQUISTION FOR STRAIN AND DIASTOLOGY
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1 OPTIMIZING ECHO ACQUISTION FOR STRAIN AND DIASTOLOGY October 8, 2017 Deborah Agler, ACS, RDCS, FASE Coordinator of Education and Training Cleveland Clinic General Principles Diastology Clinical Data Heart rate/underlying rhythm Blood pressure Height/Weight (BSA) 2D/Doppler findings LV volumes/wall thickness Ejection fraction LA volume Presence and severity of MV disease Quality of Doppler signal Limitations of parameters Technique is key
2 Diastolic Function Exam LV function Volumes Wall Thickness EF= 65% Diastolic Function Exam LA Volume LA Volume Index ~ 32.4 ml/m2
3 Diastolic Function Exam PW Doppler of Mitral valve Inflow Apical 4 chamber view Color flow imaging for optimal alignment SV size 1 3 mm placed at leaflet tips Optimize spectral gain and wall filters Sweep speed 25 to 50 mm/s. measure at mm/s Diastolic Function Exam PW Doppler of Mitral valve Inflow Measurements: peak E wave, A wave, E/A ratio, deceleration time Limitations: sinus tachycardia, conduction system disease, arrythmias Patterns: normal, impaired relaxation, pseudonormal, restrictive filling
4 Diastolic Function Exam MV Inflow PW SV Placement Incorrect Correct Diastolic Function Exam PW DTI of Mitral Annular Velocities Apical views SV (5 10 mm. ) placed at or within 1 cm of mitral leaflet insertion sites Optimize gain/filter settings and minimize angulation Velocity scale 20 cm/s above below baseline, sweep speed 50 to 100 mm/s
5 Diastolic Function Exam PW DTI of Mitral Annular Velocities Measure early (e ) diastolic velocities Average septal and lateral velocities, calculate E/e Limitations: e reduced with MV surgical rings ( repair), prosthetic valves, annular calcification and mitral stenosis, e increased with > 2+MR Diastolic Function Exam PW DTI SV Placement TDI e? SV size 5 10 mm TDI e 5
6 Diastolic Function Exam Peak TR Velocity TR Velocity 2.86 m/s TR Velocity 3.68 m/s History Age: 40, female Recent onset of palpitations Family history of CAD HR 80 bpm, sinus rhythm BP 130/85 EF 65% Normal LV wall thickness
7 Criteria for Diagnosis of LV Diastolic Dysfunction Algorithm 1 Diagnosis of Diastolic Dysfunction in Patients with Normal LV EF 1 Average E/é >14 2 Septal é velocity <7 cm/s or Lateral é velocity <10 cm/s 3 TR velocity >2.8 m/s 4 LA volume index >34 ml/m 2 0 or 1 Positive 2 Positive 3 or 4 Positive Normal Diastolic Function Indeterminate Diastolic Dysfunction Nagueh S. et al. ASE/EACVI 2016 Update What Stage of Diastolic Dysfunction? MV E ~.75 cm/s E/e ~ 9 E A e e Septal e ~ 6 cm/s Lateral e ~ 11 cm/s TR < 2.8 m/s LAVI < 34 ml/m 2
8 Criteria for Diagnosis of LV Diastolic Dysfunction Algorithm 1 Diagnosis of Diastolic Dysfunction in Patients with Normal LV EF 1 Average E/é >14 2 Septal é velocity <7 cm/s or Lateral é velocity <10 cm/s 3 TR velocity >2.8 m/s 4 LA volume index >34 ml/m 2 0 or 1 Positive 2 Positive 3 or 4 Positive Normal Diastolic Function Indeterminate Diastolic Dysfunction Nagueh S. et al. ASE/EACVI 2016 Update History Age: 65, male Previous CABG Hypertension Pre op clearance for vascular surgery HR 72 bpm, sinus rhythm BP 138/82
9 LV Function Mild LV Systolic Dysfunction (EF %) EDV ml., ESV ml. SV ml. Wall Thickness ~ Normal Algorithm 2 Estimation of LV Filling Pressures in Patients with Depressed LV EF or Normal EF and Diastolic Dysfunction E/A E 50 cm/s 2 of 3 or 3 of 3 negative E/A E>50 cm/s or E/A >0.8 - <2 3 Criteria to be evaluated* 1Average E/é >14 2TR velocity >2.8 m/s 3LA vol. index >34 ml/m 2 E/A 2 2 of 3 or 3 of 3 positive When only 2 criteria are available 2 negative 1 Positive and 1 Negative 2 positive Normal Lap, Grade I Diastolic Dysfunction Cannot determine LAP and Diastolic Dysfunction Grade* Lap, Grade II Diastolic Dysfunction Lap, Grade III Diastolic Dysfunction If Symptomatic Consider CAD, or proceed to *LAP indeterminate if only 1 of 3 parameters available. Pulmonary vein Diastolic Stress Test S/D ratio <1 applicable to conclude elevated LAP in patients with depressed LVEF Nagueh S. et al. ASE/EACVI 2016 Update
10 Mitral Valve Inflow E A SV size 1-3 mm E A Suboptimal Optimal E/e Measurement E E/e = 19 MV E 99 / DTI e 5 e
11 LA Volumes LA volume 42 ml LA volume 75 ml LA Volumes Ap 4 Ap 4 LA volume 104 ml Ap 2 Ap 2 LA volume 106 ml LA volume 112 ml LA volume 81 ml
12 What Stage Diastolic Dysfunction? E ~ 99 cm/s E/e 19 LAVI 40 ml/m 2 TR 2.5 m/s Algorithm 2 Estimation of LV Filling Pressures in Patients with Depressed LV EF or Normal EF and Diastolic Dysfunction E/A E 50 cm/s 2 of 3 or 3 of 3 negative E/A E>50 cm/s or E/A >0.8 - <2 3 Criteria to be evaluated* 1Average E/é >14 2TR velocity >2.8 m/s 3LA vol. index >34 ml/m 2 E/A 2 2 of 3 or 3 of 3 positive When only 2 criteria are available 2 negative 1 Positive and 1 Negative 2 positive Normal Lap, Grade I Diastolic Dysfunction Cannot determine LAP and Diastolic Dysfunction Grade* Lap, Grade II Diastolic Dysfunction Lap, Grade III Diastolic Dysfunction If Symptomatic Consider CAD, or proceed to *LAP indeterminate if only 1 of 3 parameters available. Pulmonary vein Diastolic Stress Test S/D ratio <1 applicable to conclude elevated LAP in patients with depressed LVEF Nagueh S. et al. ASE/EACVI 2016 Update
13 Diastolic Function Exam Valsalva Maneuver Distinguish normal from pseudonormal Decreases preload during strain phase Forceful expiration to generate increase in intrathoracic pressure Maintain SV placement with decrease of 20 cm/s in peak MV E velocity unmasking an A wave + Valsalva response is change In E/A ratio > 0.5 Limitations: difficult to perform adequately Valsalva Maneuver
14 Response to Valsalva Pseudonormal: Filling Pressures Baseline E A Valsalva E A History Age: 65, female Ischemic cardiomyopathy, S/P PCI CHF Diabetic Symptomatic HR 61 bpm, sinus rhythm Blood pressure 116/56
15 LV Function Moderate LV Systolic Dysfunction (EF ~ 33 %) EDV ml., ESV ml. SV - 54 ml. Wall Thickness ~ Normal Algorithm 2 Estimation of LV Filling Pressures in Patients with Depressed LV EF or Normal EF and Diastolic Dysfunction E/A E 50 cm/s 2 of 3 or 3 of 3 negative E/A E>50 cm/s or E/A >0.8 - <2 3 Criteria to be evaluated* 1Average E/é >14 2TR velocity >2.8 m/s 3LA vol. index >34 ml/m 2 E/A 2 2 of 3 or 3 of 3 positive When only 2 criteria are available 2 negative 1 Positive and 1 Negative 2 positive Normal Lap, Grade I Diastolic Dysfunction Cannot determine LAP and Diastolic Dysfunction Grade* Lap, Grade II Diastolic Dysfunction Lap, Grade III Diastolic Dysfunction If Symptomatic Consider CAD, or proceed to *LAP indeterminate if only 1 of 3 parameters available. Pulmonary vein Diastolic Stress Test S/D ratio <1 applicable to conclude elevated LAP in patients with depressed LVEF Nagueh S. et al. ASE/EACVI 2016 Update
16 TR Velocity Contrast TR velocity? TR velocity 3.37 m/s What Stage Diastolic Dysfunction? E ~ 95 cm/s E/e 19 LAVI 38 ml/m 2 TR 3.5 m/s
17 Algorithm 2 Estimation of LV Filling Pressures in Patients with Depressed LV EF or Normal EF and Diastolic Dysfunction E/A E 50 cm/s 2 of 3 or 3 of 3 negative E/A E>50 cm/s or E/A >0.8 - <2 3 Criteria to be evaluated* 1Average E/é >14 2TR velocity >2.8 m/s 3LA vol. index >34 ml/m 2 E/A 2 2 of 3 or 3 of 3 positive When only 2 criteria are available 2 negative 1 Positive and 1 Negative 2 positive Normal Lap, Grade I Diastolic Dysfunction Cannot determine LAP and Diastolic Dysfunction Grade* Lap, Grade II Diastolic Dysfunction Lap, Grade III Diastolic Dysfunction If Symptomatic Consider CAD, or proceed to *LAP indeterminate if only 1 of 3 parameters available. Pulmonary vein Diastolic Stress Test S/D ratio <1 applicable to conclude elevated LAP in patients with depressed LVEF Nagueh S. et al. ASE/EACVI 2016 Update 2D Strain Workflow Complete TTE (IAC standard) Incorporate into your routine study 2D Strain HFR imaging (40-90 fps) LV - Apical 3, 4, 2 chamber views RV - Apical 4 chamber view LA - Apical 4, 2 chamber views On/Offline analysis Recommend on line while patient is still present 34
18 Know your patients history LV function LVH Amyloid Constriction Oncology Valve Disease RV Function LA Function Workflow For GLS 35 Optimize 2D Strain images On axis images - seeing endocardium to epicardium Decrease depth (seeing only base of LA) Narrow sector width without losing apex Acquire views consecutively to assure same depth and frame rates Employ breathing techniques 36
19 Optimize 2D image High Quality ECG
20 Calculating Strain Begin by placement of Regions of Interest ROI Assess Tracking Adjust if necessary - May need to widen or narrow ROI
21 Approve Tracking
22 Display of Strain Values Display of Strain Values
23 Pitfalls of 2D Strain Poor Image quality Sector does not include entire LV wall thickness Poor ECG signal Unable to clearly identify p/qrs/t waves Too Different heart rate Positive values provided when segment appears to be contracting well Poor Image & Tracking
24 Narrow Sector Width Summary Provide your physicians with high quality 2D imaging and Doppler flows. Use 3D echo and contrast enhancement when needed
25 Thank you! 2D Strain
26 2D Strain 2D Strain
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